Dosage Calculator
Brut, Extra Brut, Demi-Sec: behind the terms sit fixed sugar ranges. Because they overlap, one value can allow several labels, and the grower chooses.
Move the residual sugar in grams per litre and see the permitted labels, the driest first, plus the sweetness impression and a serving suggestion.
The basis
The ranges follow EU Regulation 2019/33 for sparkling wine. Brut Nature means no added sugar up to 3 g/l, Doux from 50 g/l.